How should calculations be handled in a document database

Posted by Morten on Programmers See other posts from Programmers or by Morten
Published on 2010-12-17T07:39:27Z Indexed on 2011/01/04 17:59 UTC
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google-app-engine

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nosql

Ok, so I have a program that basically logs errors into a nosql database. Right now there is just a single model for an error and its stored as a document in the nosql database.

Basically I want to summarize across different errors and produce a summary of the "types" of errors that occured.

Traditionally in a SQL database the this normalization would work with groupings, sums and averages but in a NoSQL database I assume I need to use mapreduce.

My current model seems unfit for the task, how should I change the way I store "models" in order to make statistical analysis easy? Would a NoSQL database even be the right tool for this type of problem?

I'm storing things in Google AppEngine's BigTable, so there are some limitations to think of as well.

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